نتایج جستجو برای: shape identification

تعداد نتایج: 593494  

2016
Renu Jain

Because of huge diversity of plants existing on earth and large inter-species similarity, the manual process of identification of plants is difficult and at times, the results generated may be confusing. So, it is necessary to automate the process of identification of plants to generate faster and accurate results. Among various parts of plant, leaf is easily available in all seasons and can be...

2007
CHUNYAN YAO JIANWEI ZHANG HOUXIANG ZHANG

Automatic cell identification and segmentation are important steps for medical automation to greatly reduce human labors. The paper used a statistical model solving the practical issues in this problem, including construction of a training set, cell shape generalization, deformable model building, cell searching and segmentation. Practical experiments prove the validity of the proposed scheme. ...

Journal: رستنیها 2007
F. SHARIFNIA N. AMIRI,

Species belonging to different sections of the genus Polygonum L. were studied micro-morphologically. For this purpose, digital images were obtained from all species and lower taxa belonging to sections Persicaria, Bistorta, Tiniaria and Pleuropterus. Since section Polygonum is much diverse, pollens of three representative species Polygonum luzuloides, P. olivascens and P. setosum were photogra...

2000
Larry Spitz Arman Maghbouleh

Text categorization in the form of topic identification is a capability of current interest. This paper is concerned with categorization of electronic document images. Previous work on the categorization of document images has relied on Optical Character Recognition (OCR) to provide the transformation between the image domain and a domain where pattern recognition techniques are more readily ap...

Journal: :Pattern Recognition 1998
Sven Loncaric

This paper provides a review of shape analysis methods. Shape analysis methods play an important role in systems for object recognition, matching, registration, and analysis. Research in shape analysis has been motivated, in part, by studies of human visual form perception systems. Several theories of visual form perception are brie y mentioned. Shape analysis methods are classi ed into several...

2007
Marta Grzanek Katarzyna Szulc

Numerical method of identification for small circular openings in the domain of integration of an elliptic equation is presented. The method combines the asymptotic analysis of PDE’s with an application of neural networks. The asymptotic analysis is performed in singularly perturbed geometrical domains with the imperfections in form of small voids and results in the form of the so-called topolo...

2010
Jing J. Liu Jian Wan Caiyun Ma Yangdong Hu Xue Z. Wang

For crystalline particular products such as pharmaceuticals, shape, as a product quality variable, can be as important as size. This paper presents a methodology to derive shape descriptors from microscope images of particulate products and the use of the descriptors for classification and identification of batch to batch variations. Data from batch runs of laboratorial and industrial crystalli...

2014
Ni Ai William J. Welsh Uma Santhanam Hong Hu John Lyga

Tyrosinase is the key enzyme involved in the human pigmentation process, as well as the undesired browning of fruits and vegetables. Compounds inhibiting tyrosinase catalytic activity are an important class of cosmetic and dermatological agents which show high potential as depigmentation agents used for skin lightening. The multi-step protocol employed for the identification of novel tyrosinase...

Journal: :Vision Research 2005
E. E. Parrish D. E. Giaschi C. Boden R. Dougherty

The purpose of the current study was to investigate the maturation of form and motion perception, specifically the component visual abilities involved in the identification of motion-defined form, in children ranging in age from 3 to 12 years. Experiment 1 compared the maturation of motion-defined and texture-defined shape identification. Minimum speed thresholds on the motion-defined shape tas...

A. Bagheri, A. Zare Hosseinzadeh, G. Ghodrati Amiri,

In this paper, a two-stage method for damage detection and estimation in tall shear frames is presented. This method is based on the first mode shape of a shear frame. We demonstrate that the first mode shape slope is very sensitive to the story stiffness. Thus, at the first stage, by using the grey system theory on the first mode shape slope, damage locations are identified in shear frames. Da...

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